Information modeling system for movement of charge layers and melt accumulation in a blast furnace well; [Информационно-моделирующая система движения слоев шихты и накопления расплава в горне доменной печи]

Abstract

The article presents the results of development of an information modeling system for movement of charge layers and melt accumulation in a blast furnace well. The work is based on mathematical models reflecting modern ideas on the course of physico-chemical phenomena of blast furnace melting and technological features of the blast furnace process. The use of such system makes it possible to determine and visualize the configuration of layers of iron ore materials and coke according to the working space height, taking into account a given ore load in equal-sized annular zones of the blast furnace. In constructing the configuration of the charge layers, when materials are approaching the furnace belly, the peculiarities of their movement are taken into account. This is due to the influence of tuyere zone, primary slag formation processes, and changes in thickness of the coke layer caused by development of the direct reduction process. Calculation of the melt accumulation process in the blast furnace well provides determining the volume of slag remaining there after the notch closure of previous tapping, calculating the dynamics of filling the furnace well with melts of cast iron and slag, determining the volume output of melts of cast iron and slag for the inter-tapping period and calculating the duration of tapping. The developed information modeling system makes it possible to evaluate the dynamics of changes in configuration of layers in the working space height, as well as the process of melt accumulation in the blast furnace well, using really accessible information about a working furnace. The software architecture is described, the characteristics of the modules are presented and its operation is illustrated. The developed system can be used by technological staff of a blast furnace shop to study the processes occurring in blast furnaces, improve the technological modes of operation, predict the melting progress in real time in conditions of operation instability. © 2024 National University of Science and Technology MISIS. All rights reserved.